The most destructive element in the human mind is fear. Fear creates aggressiveness; aggressiveness engenders hostility; hostility engenders fear — a disastrous circle.
Bio: Afrikan Aleksandrovich Špir was a Russian Neo-Kantian philosopher of Greek-German descent who wrote primarily in German. His book Denken und Wirklichkeit exerted a "lasting impact" on the writings of Friedrich Nietzsche.